diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index dbd9815..2591dc6 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -22,7 +22,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout code
-        uses: actions/checkout@v5
+        uses: actions/checkout@9c091bb21b7c1c1d1991bb908d89e4e9dddfe3e0 # v7
 
       - name: Install Rust toolchain
         uses: dtolnay/rust-toolchain@stable
@@ -54,7 +54,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout code
-        uses: actions/checkout@v5
+        uses: actions/checkout@9c091bb21b7c1c1d1991bb908d89e4e9dddfe3e0 # v7
 
       - name: Install Rust toolchain
         uses: dtolnay/rust-toolchain@stable
@@ -70,7 +70,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout code
-        uses: actions/checkout@v5
+        uses: actions/checkout@9c091bb21b7c1c1d1991bb908d89e4e9dddfe3e0 # v7
 
       - name: Install Rust toolchain
         uses: dtolnay/rust-toolchain@stable
@@ -100,7 +100,7 @@ jobs:
       fail-fast: false
     steps:
       - name: Checkout code
-        uses: actions/checkout@v5
+        uses: actions/checkout@9c091bb21b7c1c1d1991bb908d89e4e9dddfe3e0 # v7
 
       - name: Install Rust toolchain
         uses: dtolnay/rust-toolchain@master
@@ -136,7 +136,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout code
-        uses: actions/checkout@v5
+        uses: actions/checkout@9c091bb21b7c1c1d1991bb908d89e4e9dddfe3e0 # v7
 
       - name: Run cargo-audit
         uses: actions-rs/audit-check@v1
@@ -149,7 +149,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout code
-        uses: actions/checkout@v5
+        uses: actions/checkout@9c091bb21b7c1c1d1991bb908d89e4e9dddfe3e0 # v7
 
       - name: Install cargo-deny
         run: cargo install cargo-deny
@@ -184,7 +184,7 @@ jobs:
 
     steps:
       - name: Checkout code
-        uses: actions/checkout@v5
+        uses: actions/checkout@9c091bb21b7c1c1d1991bb908d89e4e9dddfe3e0 # v7
 
       - name: Install Rust toolchain
         uses: dtolnay/rust-toolchain@stable
@@ -257,7 +257,7 @@ jobs:
     if: github.event_name == 'push' && (github.ref == 'refs/heads/main' || github.ref == 'refs/heads/develop')
     steps:
       - name: Checkout code
-        uses: actions/checkout@v5
+        uses: actions/checkout@9c091bb21b7c1c1d1991bb908d89e4e9dddfe3e0 # v7
 
       - name: Install Rust toolchain
         uses: dtolnay/rust-toolchain@stable
@@ -303,7 +303,7 @@ jobs:
     if: github.ref == 'refs/heads/main'
     steps:
       - name: Checkout code
-        uses: actions/checkout@v5
+        uses: actions/checkout@9c091bb21b7c1c1d1991bb908d89e4e9dddfe3e0 # v7
 
       - name: Install Rust toolchain
         uses: dtolnay/rust-toolchain@stable
diff --git a/.github/workflows/label-sync.yml b/.github/workflows/label-sync.yml
index deff46e..e126f66 100644
--- a/.github/workflows/label-sync.yml
+++ b/.github/workflows/label-sync.yml
@@ -26,7 +26,7 @@ jobs:
 
     steps:
       - name: Checkout code
-        uses: actions/checkout@v4
+        uses: actions/checkout@9c091bb21b7c1c1d1991bb908d89e4e9dddfe3e0 # v7
 
       - name: Sync labels
         uses: EndBug/label-sync@v2
diff --git a/.github/workflows/quick-check.yml b/.github/workflows/quick-check.yml
index 2a68b2f..1f42416 100644
--- a/.github/workflows/quick-check.yml
+++ b/.github/workflows/quick-check.yml
@@ -20,7 +20,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: 📥 Checkout code
-        uses: actions/checkout@v5
+        uses: actions/checkout@9c091bb21b7c1c1d1991bb908d89e4e9dddfe3e0 # v7
 
       - name: 🦀 Install Rust toolchain
         uses: dtolnay/rust-toolchain@stable
diff --git a/.github/workflows/test-suite.yml b/.github/workflows/test-suite.yml
index dd4260f..5e90c73 100644
--- a/.github/workflows/test-suite.yml
+++ b/.github/workflows/test-suite.yml
@@ -24,7 +24,7 @@ jobs:
         os: [ubuntu-latest, windows-latest, macos-latest]
     steps:
       - name: 📥 Checkout code
-        uses: actions/checkout@v5
+        uses: actions/checkout@9c091bb21b7c1c1d1991bb908d89e4e9dddfe3e0 # v7
 
       - name: 🦀 Install Rust
         uses: dtolnay/rust-toolchain@stable
@@ -55,7 +55,7 @@ jobs:
         os: [ubuntu-latest, windows-latest, macos-latest]
     steps:
       - name: 📥 Checkout code
-        uses: actions/checkout@v5
+        uses: actions/checkout@9c091bb21b7c1c1d1991bb908d89e4e9dddfe3e0 # v7
 
       - name: 🦀 Install Rust
         uses: dtolnay/rust-toolchain@stable
@@ -77,7 +77,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: 📥 Checkout code
-        uses: actions/checkout@v5
+        uses: actions/checkout@9c091bb21b7c1c1d1991bb908d89e4e9dddfe3e0 # v7
 
       - name: 🦀 Install Rust
         uses: dtolnay/rust-toolchain@stable
@@ -99,7 +99,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: 📥 Checkout code
-        uses: actions/checkout@v5
+        uses: actions/checkout@9c091bb21b7c1c1d1991bb908d89e4e9dddfe3e0 # v7
 
       - name: 🦀 Install Rust
         uses: dtolnay/rust-toolchain@stable